Axios

Admin Panel Large File Upload Optimization: A Pitfall Chronicle from Multer OOM to Presigned URL Direct Upload

HttpClient — 401 Auto Refresh + Request Deduplication + Exponential Backoff Retry

The admin panel's HttpClient wraps Axios with declarative features: single-flight token refresh, request deduplication (GET + non-GET), exponential backoff retry (max 3), business code validation, and Sentry tracing — all in one 519-line class.